Malicious PDF — malware analysis report

Static analysis result for SHA-256 36135a696bea50fd…

MALICIOUS

PDF

40.4 KB Created: 2020-09-02 10:03:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7750ee882f00b0ec380c7ef8b9c339b SHA-1: 86f8534a36d3e711227bcb2973f56c959b08a6be SHA-256: 36135a696bea50fd201883ec784156849af66f505749af6a9b8ed7df8a49ded8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to IRS forms for non-deductible IRAs, which is a common advance-fee scam tactic. It embeds a link that redirects to malicious infrastructure, specifically 'ttraff.me', likely to deliver a secondary payload or phish for credentials. The file also contains a large number of links to other PDFs, suggesting a link farm for SEO manipulation or to spread malicious content.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.me/wix?keyword=non+deductible+ira+irs+form
    • https://static.usrfiles.com/ugd/b8c837_4e09d8b6de35499d85ff50e2c54497e0.pdf
    • https://static.usrfiles.com/ugd/b13fd1_cdcf1b2dc38b453ba3b6abc0176c4e02.pdf
    • https://static.usrfiles.com/ugd/b8c837_edbf9d3e982a4cc5be79995981a2a573.pdf
    • https://static.usrfiles.com/ugd/c1615c_076e07c6ff2f46a3b577d826529212b2.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/wifevatimurano.pdf
    • https://cdn.shopify.com/s/files/1/0454/0062/1224/files/astrology_app_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/88818371208.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/citrix_vdi_slow_performance.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/canva_bifold_brochure_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/7805425513.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/zafujenogisivi.pdf
    • https://cdn.shopify.com/s/files/1/0465/5123/6766/files/morag.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/wedding_slideshow_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5f.bin
108568fa589e7c95a7a3e6563776964fdb87c93f81e0f17a4b3c13029f0c5e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5F 5276 bytes
font_01_sfnt_off00007038.bin
72d46e7771a928bfdfd32c193ef0b71c23fa7c1173a8042bb51d49fa82b5017f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7038 10768 bytes

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